Railway-signal



F. J. EVANS. Y

RAI'LWAY SIGNAL.

- APPLICATION FILED FEB. 28. 1920.

1,852,801; Pateteasept. 14,192.0.

mw I".

UNITED STATES! .rRnpnRroKaoHNf-Evairs, or anni warns.

i RinwAY-fsielvar.; y

T 0 all whom t may concern: l

Beit known Vthat I,FnEnE-R1GK JOHN EVANS, a subject of the King of GreatBritain, residing at 2 Gaspard Place, Barry, in the county of Glamorgan,lV'ales, Great Britain, have invented new and-.usefullmprovements inRailway-Signals, oi which the :following is a specification. v I

This invention relates to Vimprovements in railway and. therlilresignals,V and apparatus,

and more especially to signals forfin'dicating automatically toadriverthe position of railway pointsm The' object of this inventionis-to provide a Y signalj` which shallv` 'definitely f indicate whetherthe points "are vopen or "closed lVhen railway points-are operated from,a signalA cabin at a distancetrom them,.the

pointsfinay remain open, althoughsthe operator in the vsignal cabin hasmoved the lever to the closed position; thishas been l Preferably thecause of accidents. inyfinvention this defect has been overcome.According to myinventiona signal is set at danger or atl cle'ar7 byth'epoints, the arrangement being? such; that except when the points aresubstantially closed-,the sig-v nal is at danger.7 v. e.

In practice the'- arrangement may con-V veniently be so"v set thatA thesignal is at danger when the points area greater distance; than 'of' aninchfrom their closed position. iA f 1 the signal is actuated by atumbler' 'or snap actioninv such 1amanner that a very small movement .of:the points7- when'ne'ar their closed position,sets -the signalvdefinitely either at Fclear or at dangen Y The drawings showdiagrammatically how the invention may be carried out.v

- Figure l is a general view, Fig.V 2 is an end elevati'onvpartly.insection, 3 is a detail in plan, Fig. leshows a modication and Fig. 5a plan of the actuating rod.

A .isa fdisk signal Yrotatablymounted on a yboss Bona casing C; D. isa.bell crank lever kpivotally mounted `ona boss E- onthe casing C; `theendA ofone armv is connected by a rod` ,to the signalA, .whilethe end ofthe other arm is 'connectedby aspring G to a leverI-I mountedon aishaftJK is a counterweight tendinglvtof'keep the lever H in averticaliposition.i-'L,is a slotted rod connected toA a Vpoint M', andadapted lto. en.-

' gageY with the leverII; '-Nis a rail ,O and P .arefred green glassesjucarried signalA A R are stops to limit the movement of the lever f Inoperation, when theil point M comes withinsayf of an inch ofthe rail N,the

rod Lfcomes in contact'- with andtilts the leverH. As soonas thesp'ringGr 'has been moved past thepivot of the bellcrank lever D, ,the Ybellcrank lever Du and connectingv @TENT OFFICE Y e ratentedsepa 14', 1920;'I Application mea February 28,1 y1920. serialNc. 362,011.r

Dandfthelsignal A'is moved 'quickly todan'flf'f ger and remains atdanger `whateverfarther.V

distance thepoint M may be Inovedaway from the railN.

When it is, desired'to loperate thesignal A at azdistancefrom the pointM, therod J isyprolongedjcas shown 1n Fig. 4,' and a second. lever: S,to which the spring Gr is attached, is secured to it. v

It will be seen that with the arrangement described` the condition.ofithe' pointsfis definitely indicated to adriver without the aid ofasignal cabin, and that the signalis not `moved until thepointshavezreached a certain denn-ite pOsition.

I claimis: g 1. The combination of ar railway signal,

Y points, andasnap action lever so connecting the said signal tothepoints that the lsignal is atdanger eXceptwhen the pointsaresubstantially closed. j

2. Thev combination of a railway signal, points, and a snap action leverso connecting the said signal to the points that a small movement of.`the points causes the full movement of the signal.y

L 3. The combination of a railway signal,

points, an oscillating lever operated by the points, and Ameansconnecting the oscillating lever to the signal whereby asmallmovenment'ofthe oscillatinglever causes the full movement of the signal. I 4.The combination ofaxfrailway signal,

points, anoscillating lever operated by the points, a bell crank lever,onek of whose arms isconneetedto said signal, and means con'- ne'ctingthefother' arm of the bell crank to the oscillating leverV wherebyasmall movement of the oscillating lever causesthev full movement ofthei'signal. i

5. Thefcombination of a railway signal,

points, Van oscillating lever operated bythe points, a bell crank lever,one otwhose arms is connected to said signal, and aspringconnecting theother arm of the bell crank to the oscillating lever whereby a smallmovement of the oscillating lever causes-the full Vmovement 'of thesignal.

6. The combination of a railway signal,

'A points, an oscillating-lever, a slotted rod 8.'.The combination otarailway signal,l l points, an' oscillating lever, a slotted-i rodconnectedv to said points and engaging said oscillating lever, a bellcrank lever, onerof whose arms 1s connected to said signal, and

- a spring 'connecting the other arm of the bell crank to'theoscillatinglever whereby a small movement of the oscillating levercausesthe full movement ol' the signal. 1

9; The combination of a railway signal,

stopsy to limit the movement ofthe signal, points, and a snap action.lever so connecting the said signal to the points thatasmall movement ofthe points causes the full movement of the signal. I

10. The combination of a railway signal, stops to limit the movementr ofthe signal, points, an oscillating lever operated by the points, andmeans connecting the oscillating lever to theV signal whereby a smallmovement of the oscillating lever causes the full movement of thesignal. y l

11. The combination of a railway signal, stops to limit the movement ofthe signal, points, an oscillating leverA operated by the points, a bellcrank lever, one of whose arms is connected to said signal, and meansconnecting thezother arm of the bell crank to` the oscillating leverwhereby a Vsmall movement of the oscillating lever causes the fullmovement of the signal.

12. The combination of a railway signal, stops to limit the movement ofthe signal, points, an oscillating lever operated by the points, a bellcrank lever, one of whose arms Vis connected to said signal, and aspring connecting the other arm of the bell crank to the oscillatinglever whereby a small movement of the oscillating lever causes the fullmovement of the signal.Y y

13. The combination oi a railway signal, stops to limit the movement ofthe signal,

the

points, an oscillating lever, a slotted rod connected vto said pointsand engaging said oscillating lever, and means connecting theoscillating leverv to the signal whereby a small movement ofltheoscillating lever causes the full movement ofthe signal. I

14. The combination of a railway signal, stops to limit the movement ofthe signal, points, an oscillating lever, a slotted rod connected tosaid points and engaging said oscillating lever, a bell: crank lever,one of whose arms vis connected to said signal, and means connecting theother arm oit' the bell crank to the oscillating lever whereby a smallmovement ot the oscillating lever causes the full movement orP thesignal.

15. The combination of a railway signal,

stops to limit the movement of the signal,

points, an oscillating lever,aslotted rod connected to said points andengaging said oscillating lever, a bell crank lever, one of whose armsis connected to said signal, and

a spring connecting the other arm of theb'ell crank to the oscillatingleverwhereby a small f movement of the oscillatinglever causes the .tullmovement of the signal.

16. T-'he combination ofa railway signal, points, arod, an oscillatinglever mounted in said rod and operated by the points, a bell cranklever, one of whose arms is `connected toV said signal, and meansconnecting the other arm of the Abell crank to a lever fast with the rodon'which saidvoscillating esl lever is mounted whereby a small movement.l

of the oscillating lever causes the full movement of thesignal'.' y l17. The combination of a` railway signal, points, a rod, an oscillatinglever` mounted on said rod and operated by the points, a bell cranklever, one of whose arms is connected to said signal, and a springconnecting the other arm of the bell crank'to a lever fast with the rodon which said oscillating lever is mounted wherebyasmall move- ,ment ofthe oscillatinglevercauses the'full movement ofthe signal.

18.. The combination of a railway signal, stops to limit the movement ofsaid signal,

points, a rod, anoscillating lever mounted on x whereby a small movementof the oscillating lever causes the `fnllmovementl of the signal. 20.The. combinationk ot a railway signal,

points, an oscillating lever operated by the "points, a Counterweight onthe oscillating lever, and means connecting the oscillating lever to thesignall whereby a small movement l of the oscillating lever causes thefull movement of the signal.A

2l. rlhe Combination of a'railvvay signal,

points, an oscillating lever operated by the points, means adapted toreturn the oscillating lever to its normal position, a bell crank Ylever, one of whose arms is connected to said points, an oscillatinglever operated by thepoints, means adapted to return the oscillatinglever to its normal position, and means connecting theosoillating leverto the signal v. l

whereby a small movement of the osoillating lever causes the fullmovement ofthe signal.

23. The combination of a railway signal,

points, a rod, an oscillating lever mounted 'K onv said rod and operatedby the points,

means adapted to return the oscillating lever to its normal position, abell crank lever, one of whose arms is vconnected to said signaha leverfast with the rod on which saidoseillating lever isi-mounted and meansconnecting the other arm ofthe bell crank to said last mentioned leverwhereby a small movement of theoseillating lever causes the fullmovement of the signal. y

In testimony'Y that I claim the Vforegoing as my invention, I havesigned my name this 6th day of February 192 FREDERICK JOHN EVANS,

